Power-cylinder construction for motors



Jan. 2, 1923. 1,440,623

G. PARENTE. POWER CYLINDER CONSTRUCTION FOR MQTORS.

FILED FEB. 3. 1921..

3 SHEETS-SHEET I I 1 w Par/enteg Lave/n12),

Jan. 2, 1923. 1,440,623

' G. PARENTE. POWER CYLINDER CONSTRUCTION FOR'MOTORS.

FILED FEB- 3, 1921. 3 SHEETS-SHEET 2 A4 a 'A l j I l7 l 16 2 l5 2.9 30

3 2 T 7 a 0 5 AW 5 4., H S 3 i R O T O M Rv 0 F G. PARENTE LINDER CONSTRUCTION LED FEB 3 1 921 Jan. 2, 1923."

Patented dang, 1923. 1 4 623 narrate stare GIUSEPPE YABENTE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-EIGHTH TO PETER IVIOBIEL, F BROOKLYN, NEW YORK.

POWER-CYLINDER CONSTRUCTION MOTORS.

Application filed February 3, 1921. Serial No. 442,078.

To (/JZZ2U/ L077Ltt may 00%06772-1 It is my object to provide a very simple Be it known that I, Grnsnrrn Pannn'rn, a construction with the above mentioned elimisubject of the King of Italy, residing at nation of stufling boxes, bearings, glands, Philadelphia. in the county of Philadelphia etc, with a simple method'of interconnecting and State 01 Pennsylvania, have invented the pistons and interconnecting the pistons, 60

certain new and useful improvements in cross head, guide and connecting rod. Power-Cylinder Constructions for lilotors, It is an additional object of my invention of which the following is a specification. to provide means of actuation for a slide My invention relates to power cylinders valve and a slide valve which will be simple 10 and to a method or" applying in succession in operation and will positively control the 65 power in such a cylinder for the actuation of entrance and exit ports communicating with the moving parts. the two cylinderson either side of the com- The objectoi my invention. is to provide mon cylinder head.

a cylinder or cylinders in which apair of This results in high velocity of the moving pistons operate against a common cylinder parts due to their lightness, the absence (it 70 head, said pistons forming the respective weight because it is not necessary to make end walls of their respective cylinders and them heavy to Withstand great strams and the common cylinder head forming the other because durability is secured due to the end walls of the cylinders. smooth and evenoperation of the device of My invention is distinguished by the fact my invention. 75 that no packing or stufiing boxes are neces- It is an additional object to provide intersary. It is a further, object to provide a connecting linkage to operate the slide valve, means of utilizing the same power charge, the linkage being connected to the reciproeither gas or fluid, for the successive actuaeating connecting rod so that the introduction tions of the two pistons and to also actuate of the fluid or gaseous pressure into the cyl- 80 those pistons in synchronism with one aninders in succession from the source of sup other ply will be synchronized. I It is my object to provide a cylinder and a It is a further object to provide means of means of distributing fluid or gases under regulating the accumulated air pressure on pressure thereto without the aid of stufling the sides of the pistons opposite the location boxes distributing eccentrics, special guides of the steam or fluid pressure and also to" and cross heads, etc. provide means of exhausting any surplus It is a further object of my invention to air compressed between the outer ends of the provide a cylinder or cylinders in which the cylinders and the pistons.

35 motive power in the form of steam, gas orv Referring to the drawings: g luid or the like isapplied in a single charge Fig. 1 is a side elevation from the slide once for each revolution of the shaft and valve side 01"" the assembled parts constitutduringthis single application it exercises a ing my construction dual. efiect or an effect in both directions in Fig. 2 is a plan view of Fig. 1; I

40 successiomthus imparting to the reciprocat- Fig. 3 is a section on the line 3-3 of ing connecting rod both a thrust and a pull. Fig. 1; Consequently the power is'continuous'ly ap- Fig. 4: is a section on the same line with plied. the slide valve in a' different position and It is a further object of my invention to the pistons in their reverse position;

45 provide a single common cylinder head for Fig. 5 is a section taken on the line 5 -5 the two cylinders so that the cylinder head of Fig. 2'; I will act in a double capacity for both steam Fig. 6 is a'sectiontaken on the line '66 chambers or cylinders. of Fig. 5'; r y

't is a further object of my invention to Fig. 7 is a detail of the slide valve; and, 50 providea very simple arrangement by which Fig. 8 is a detail ot'a' bearing member on .the entrance port to one cylinder may also the connecting rods betweenone of the pisbe utilized as the exit port for thecharge of tons and the cross head.

I steam or other motive fluid or gasinto the Referring to the drawings, 9 is acylinder second cylinder on the other side offtheconm divided into twocompart'me'nts or-ch'ambers 55 mon cylinder head. 'lO'andf'll-g 1O its-smaller in diameter than-11.

10 constitutes the high pressure chamber and 11 constitutes the low pressure chamher. The difi'erent size chambers and the difierent size pistons 17 and 22 working therein are proportioned on the basis of the difference in pressures.

1n the respective chambers or cylinders separating these cylinders 10 and 11 is a common cylinder head so that the cylinders are formed of a common cylinder head 12 with the cylinders on either side thereof, the other end of the cylinders being formed by the pistons and 22. 1t 'ill be apparent, therefore, that no stuffing boxes, glands, etc., will be necessary as whatever steam escapes around the pistons is negligible and no pressure to be taken into account save as hereinafter related on the left hand of 17 and on the right hand of 22, as Fig. 3 is viewed. 17 is provided with a piston rod 16 traveling in a supporting hearing which is not airtight but is sufiiciently looseto provide the escape of any air that may be cgmpressed in 10 on the left hand side of 1:. point of contact between 16 and 14 through which the compressed air may escape if there is a surplus thereof is 15. The usual head 18 is provided on 16 to which there is pivotally connected the connecting'rod 37 which passes tothe conventional fly wheel of the engine, being pinned thereto near the periphery thereof. 18 in this instance is extended to form a cross head,.the outer ends of which are guided by projections or arms mounted on. the cylinder and designated 19.

It will be apparent in this unique organization of parts that the usual stufling box at 15 is entirely absent and that the construction need only be strong enough to support 16. The heavy construction of the cylinder itself with the attendant walls, strength of casting, etc. need not be em ployed because there is no pressure of any appreciable extent exerted against 14.

At the other end of the cylinder 1 the same thing is true and the head 42 is of very light construction. This elimination of the unnecessary parts and unnecessary weight permits of very considerable'lightness in the structure, greater speed of the reciprocating parts and consequently greater durability due to the fact that the parts do not need to be made as heavy to withstand thestrains set up in heavy reciprocating parts and parts subjected to heavy pressures.

On the left hand of 17 and the right hand of 22 are the chambers in which air will be more or less confined and will be compressed before it can escape due to the movement of 17 and 22 in alternate directions. In order to compensate for this a communieating passage way 13 communicates with each of these chambers on the respective sides of 17 and 22. Due to the fact that the This bearing is designated 1% and the area on the left hand side of 17 is of lesser area .than that on the right hand side of 22, it will be apparent that there will be greater pressure set up in the area on the left hand side of 17. For that reason the juncture of 14 at 15 with 16 is relatively loose so that the excess air may escape. By partially conlining the air in these chambers by the bearing 14 andhead 12 the collection of dust in the chambers willbe more or less prevented. It is apparent that if the engine be kept covered from dust, these parts 11- and 17 be entirely omitted.

The steam or other fluid or gaseous motive power introduced through the pipe 3% into the slide valve chamber The slide valve rod 36 has attached to a slide valve 85. The one end of this rod is guided in the member 36 is connected by 38 to a bell crank 39 which in turn is connected by a link all to the connecting rod 37 in order to give the proper reciprocation to 35 in the conventional manner.

A passage way 4:6 is cut out in 35 for the passage of the steam and the like in the alternate positions of 35. i

In the position shown in Fig. 3 the steam is introduced through 2 1 to the right hand side of 17 driving 17 to the left. 17 forms one end of the cylinder and 12 the other end of the cylinder. The air that is behind 17 to the left hand passes up through the pipe 13 to the right into the area at the right hand side of 22.

lit will be observed thatthe cross head 18 has connected therewith the piston rods 20 being guided in the cylinderwalls and connected at their outer end. to the piston 22 so that when 17 and 16 pass to the left 22 and 20 will also pass to the left together with the connecting rod 17 and the cross head 18. Simultaneously the slide valve 35v in due season will be actuated. to pass, over the entrance port 24 and form a channel through 16 by which the steam under high pressure between 17 and 12 canpass from that high pressure area into the area to the left hand of 22 between 12 and 22thus moving 22 to the right and likewise moving 17 to the right. The air that is caught on the right hand side of 22 will return through 13 behind 17 35 and its connecting parts are so timed that when the steam has exerted itself on 22 on the left hand side thereof and moved it into the position shown inFig. 3, 35 will be in the position so that 46 will communicate with 29, the entrance and exit passage way to the left hand of 22 and will also communicate with 80 and the pipe 31 to exh aust the steam.

It will be thus seen that in one revolution but one charge of steam will be introduced and this one charge of steam will act on the high pressure piston. and on the low pressure piston during the single cycle of the.

l'ly wheel and single cycle of movement the connecting rod.

If desired packing rings 4C5 can be provided on 20 but the long bearing surface of 20 in 1 under some conditions will be suiiicient without necessity of any packing rings and therefore introduction optional.

In this single cylinder having two chamber", it is my usual practice to provide a larger chamber about one and one-half times in surface area than the smaller. The fluid pressure in the larger chamber is from one to two atmospheres lower than the pressure in the high pressure or smaller chamber. Thus the steam due to my method of control through the valve pushes the piston for a portion of the stroke corresponding to an angle of about 138 degrees upon the circumference of an are described by the crank shaft pin on the fly wheel. The remaincer ot the stroke is a pull being eX- erted through the agency of the pressure in the other chamber.

\Vhile I have shown and described cer tain features as constituting my invention, it will be understood that parts have been shown for purposes of illustration only, and that I do not desire to be limited to such details, as obvious modifications will occur to a person skilled in the art.

Having thus fully described my invention, what I claim as new and desire to se cure by Letters Patent, is

1. In combination, a cylinder in one piece divided into two compartments by an imper- :torate central. integral partition, a single port communicating with each compartment of the cylinder so divided, each of said ports being adapted to be alternately used as exit and inlet ports, a valve for controlling the ports, pistons in said respective compartments of the cylinder, piston rods for the pistons, a cross head connecting the piston rods, and guides for the cross head.

2. In combination, a cylinder divided into two compartments by a common impertorate dividing wall, each compartment having a single port, a piston in each compartment,

means to interconnect said pistons, a connect-ing rod connected to said piston rods, a slide valve operated through said connecting rod to control a portto each of the compartments, said ports being used alternately entrance and exit ports, and an exhaust port adapted to be connected with one of the compartment ports, whereby as the pistons operate in conjunctionwith the common dividing wall between the chambers, power may be continuously applied to the piston rods, and the entrance and exit of the same power charge first to one chamber, then to the other, and finally exhausted, will be accomplished.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GIUSEPP'E PARENTE'. 

